L,-(w * I w ends with 1 } 2 = {w *I w starts and ends with the same symbol 3 = {w .iw contains at least five l s} = {w * I w contains at most four 0s) Ls = {w * l the length of w is odd } 6 = {w E . the number of 1s in w is not divisible by 51 L7-(w E * law ends with the substring i 10 or 11} 8 = {w * | w contains the substring 1001} Lio = {w . w has at least four 1s and an even number of 0s}